im saving up for nidalee and im wondering ifs shes better built for ap or ad, or maybe a little of both?

AD bruiser nidalee carries through early-mid game and splitpushes later on. AP nidalee has an excellent poking game, but trades in some of her early-mid game power to get this.

Hybrid is...not very good.

I play AP Bruiser Nid and I relish at the late game snipes. They are amazing with her human Q. It makes her really useful for punching holes in people so others can do the killing blows, but also you can switch to cougar, chase, chase, pounce to catch up, then switch back and finish them with your q. All in all, I think you would have a lot of fun as either, but I find I'm more useful as an AP nid.

AD nidalee is a lot easier to play imo...

AP relies a lot on the enemy eating your spears, but switching into cougar as AP and jumping into a fight is the last thing you want to do, unless their team is pretty much dead and you're just finishing them off with your E..